Sean-H-

Best answer as chosen by Asker / Ratings
Sorry took so long in replying back...haven't been on the game for a while

To get the samples...they should show up on your mapy, once entering the facility...they are placed in various places around the builing, for example one is in a briefcase, one is by some tube, but the last one is with the boss that you need to kill, I killed him using the sniper rifle, and also the pistol, he is the boss that you kill with leon, that has a shield as his arm, and he runs at you...once you have killed him...make your way up the lift...and then go into the control room, do not worry there is no more enemies that come, and you can watch the trailer